計算機による色覚異常者支援のための個人の混同色の測定

摘要

In Japan, about 2.5％ of people have color vision deficiency and individual differences exist in the condition. On the other hand, display devices have particular color characteristics. In order to solve problems which arise from those differences and characteristics, we proposed the method for determining confusion color pairs and evaluated the ability. Determination of confusion color pairs is done like a bisection method. Three stimuli are presented to subject, one of them is reference, and others are test stimuli. Subject's task is only selecting test stimulus that color is perceived more similar to reference's color than another one. Two methods for assigned initial colors of stimuli were proposed and evaluated. As a result, we found that both methods had ability for determining color pairs suitable for previous works, and it seems to be good results for the method employing theoretical confusion line for assigned initial colors.%日本人の2.5％に発現する色覚異常は，その症状に個人差が存在する.また，表示デバイスはそれぞれが固有の表色特性を持っている.それらを考慮した色覚異常者支援の実現のため，色覚異常者の混同色を測定する方法を提案し，その性能を検討した.混同色の測定は，色度の異なる参照刺激と二つのテスト刺激の三つの刺激を提示し，被験者が参照刺激により色が近いと知覚するテスト刺激を選ぶことによって行うものとした.初期刺激色の決定のための二つの手法を提案し，比較した.その結果，両手法で混同色軌跡の知見に概ね従う測定結果が得られ，色の選択に理論的な混同色軌跡を利用した手法で良好な測定が行える傾向が見られた.